Merge pull request #26756 from storybookjs/update-addon-mdx-gmf-readme

Docs: Fix incorrect link in addon-mdx-gfm README
(cherry picked from commit 3c645b5)

code/addons/gfm/README.md

@@ -6,6 +6,6 @@ The "@storybook/addon-mdx-gfm" addon is meant as a migration assistant for Story
 > This addon will likely be removed in a future version.
 
 It's recommended you read this document and follow its instructions instead:
-https://storybook.js.org/docs/react/writing-docs/mdx#lack-of-github-flavored-markdown-gfm
+https://storybook.js.org/docs/writing-docs/mdx#markdown-tables-arent-rendering-correctly
 
 Once you've made the necessary changes, you can remove the addon from your package.json and storybook config.